4 CHANNEL ( SHELF MOUNTED ) LOOP AMPLIFIER

Marlin Controls, Inc. offers the LM series of Loop MonitorsTM from Eberle Design which takes vehicle detection one step further. They not only indicate vehicle presence with great accuracy and reliability, but also monitor the condition of the loop for diagnostic purposes. The LM304 Series meet or exceed all standards specified in NEMA publication TS 1-1989 part 15 (Inductive Loop Detectors).

DIAGNOSTIC FEATURES

Separate Detect/Fault LEDs Fault Memory Optically Isolated Solid State Outputs. Options Records previous fault information. If a problem self- heals, the LM304 will resume normal operation.

The contents of the memory will be displayed on the Fault LED. This feature can be used to isolate the source of intermittent loop failures. Eliminates the confusion encountered with other detectors that use only one LED to display both faults and detection.

The Fault LED displays the type of fault:
Short, Open or 25% change of inductance. Each type of fault is indicated by a unique sequence of flashes allowing the user to diagnose loop failures at a glance. Automatic Tuning Environmental Tracking 15 Levels of Sensitivity Four Loop Frequencies and Sequential Scanning No manual tuning is required. Together, these features greatly reduce the incidence of crosstalk.

Ensures reliable operation by continuously adjusting for changes in ambient conditions. Allows users to fine tune the Loop MonitorTM to their application.

Three Selectable Modes Pulse: For counting and volume.

Short Presence:
For normal detection.

Long Presence:
For sites where loops may be occupied for extended periods of time.

For more information or to receive a quotation please call Marlin Controls, Inc. at 508-278-0446 or 203-743-6231 in Connecticut.